package com.leaf.domain.strategy.service.rule.chain.factory;

import com.leaf.domain.strategy.model.entity.StrategyEntity;
import com.leaf.domain.strategy.repository.IStrategyRepository;
import com.leaf.domain.strategy.service.rule.chain.ILogicChain;
import lombok.*;
import org.springframework.stereotype.Service;

import java.util.Map;

/**
 * @Author LEAF
 * @Create 2024/8/4 17:55
 * @Description 责任链工厂
 * @Version 1.0
 */
@Service
public class DefaultChainFactory {
    private final Map<String, ILogicChain> logicChainGroup;

    private final IStrategyRepository repository;

    public DefaultChainFactory(Map<String, ILogicChain> logicChainGroup, IStrategyRepository repository) {
        this.logicChainGroup = logicChainGroup;
        this.repository = repository;
    }

    public ILogicChain openLogicChain(Long strategyId){
        StrategyEntity strategy = repository.queryStrategyEntityByStrategyId(strategyId);
        String[] ruleModels = strategy.ruleModels();
        if (null == ruleModels || 0 == ruleModels.length) return logicChainGroup.get("default");

        ILogicChain logicChain = logicChainGroup.get(ruleModels[0]);
        ILogicChain current = logicChain;
        for (int i = 1; i < ruleModels.length; i++) {
            ILogicChain nextChain = logicChainGroup.get(ruleModels[i]);
            current = current.appendNext(nextChain);
        }
        current.appendNext(logicChainGroup.get("default"));
        return logicChain;
    }

    @Data
    @Builder
    @AllArgsConstructor
    @NoArgsConstructor
    public static class StrategyAwardVO {
        /**
         * 抽奖奖品ID - 内部流转使用
         */
        private Integer awardId;
        /**
         * 抽奖类型；黑名单抽奖、权重规则、默认抽奖
         */
        private String logicModel;
        /**
         * 抽奖奖品规则
         */
        private String awardRuleValue;
    }

    @Getter
    @AllArgsConstructor
    public enum LogicModel {

        RULE_DEFAULT("rule_default", "默认抽奖"),
        RULE_BLACKLIST("rule_blacklist", "黑名单抽奖"),
        RULE_WEIGHT("rule_weight", "权重规则"),
        ;

        private final String code;
        private final String info;

    }
}
